Leveling machine



Feb. 8, 1949. F. 'v. HART LEVELING MACHINE 5 Sheets-Sheet 1 Filed Nov.1, 1947 In ventan Fre d V. Ham

Feb. 8,1949. F. v. HART LEVELING MACHINE Filed Nov. 1, 1947 5Sheets-Sheet 2 [rl van i01 Fred M 170.7 Z-

Feb. 8, 1949. F. v. HART LEVELING MACHINE 5 Sheets Sheet 5 Filed Nov. 1,1947 frzvehfan 7 Fred \ll'lafit eb- 1949- F. V.'HART 2,460,933

LEVELING MACHINE Filed Nov; 1, 1947 5 Sheets-Sheet 4- ni -l 7159.8. Invemm Y Fred V. Hart Feb. 8, 1949. F. v. HART LEVELING MACHINE 5Sheets-Sheet 5 Filed Nov. 1, 1947 In van for Fred If Hart Patented Feb.8, 1949 PATENT QFF ICE.

LEVE IHWG Fred V H'art, Lynn, Masse assign) to United ShoeMachineryfiorpo'ration Flemington,.N. a corporation (if-New JerseyApplicatiort now-renter 1, 1m, Sefimf-Nm teams This invention relates tomachines for opera'ting-v upon shoes, and more particularly to ma chinesfor shaping or levelingthe bottoms of shoes, The invention isillustrated herein with reference tothat type of machine in which thebottom of a shoe is acted upon by alevelingf roll,

the roll: being mounted for movementslengthwiseof the shoe and fortipping movements trans versely of the shoebottoma- It is an object ofthe invention to: provide an improved machine of the type referredtoabove inwhich movements of the roll lengthwise of the shoebottom areefiect'ed by power opeiated' means which is in turncontrolled by amanual operating member in such manner that the rollis moved intopositions corresponding to the positionsintoqwhich the operating memberis moved by the operator.

In accordancewith: a

feature ofthe invention, the operating member" is the form of apair ofhandles mountedat opposite ends of the roll but movable relativelyProvision is made for locking the support thereto, the handles beingarranged tobe moved by the operator into positions corresponding to thepositions towhich it is desired to: move the roll; The handles controlthe" flow of pressure fluid to a fluid-pressure motor by which movementsof the roll lengthwise of the shoe are efiected, there being provisionfor cuttingoff the flow of pressure fluid to the: motor upon movement ofthe roll to a position corresponding to that of the handles.

In accordance with a further teatur of the invention, the handles arealso mountedfor tippingmovements about an axis extending trans verselyof the axis of the leveling roll and: the

the invention, is a motor by which spindle"on" handles control, by theirtipping movements; the

flow of pressure fluid to a fluid-press-ure-oper ated roll-tippingmotor, there being provision-for cutting off the flow of pressurefiuidtothis motor upon movement of the roll into a position correpower,thereby minimizing fatigue onthe part of the operator in carrying. outthe leveling operatiom In accordance with a. still further feature oftheihventi'ong the leveling. roll is i oroed by 'a fluid pressure motorinto engagement with the" shoe bottorng the: introduction of pressurefluid into the motor being controlled by one of the aforementionedoperating handles. By a slight heightwise movement at the handim theroll may be-li fiteet the shoe: bottom or forced into engagementtherewith Thus; the operator has:

complete-confl ct at all times over "all: movements 0% thelevling'irollz whetherobziect oi the invention is to provide:- an";ianptoved leveiinglmaehine in when the .levei mg operation may becommencedeither at the toe-"ended the: shoe or at the heel end accordance with the desires-of the operator. 'l his is-acconrplishedg inaccordance with afurther faainnie the: invention, by providing a sup"port fior'tne shoewhich may? be" turned into the-1" 01 two positionswhich the toe ehdl of the shoe orthe heel: end thereot is? directed reaqwardly.

either oi its: twcr positions; With the toe end dii ected rearw-amdly;the" leveling: operation willstart at the toe end, whereas it \vtl1stant at" I the heel end when the heel end== oi the shoeis I directedrearwardly. Associated with the" shoe support, in -accordance withanother featurdof the heel 'supporting" member of the" shoesupport isrocked: tof orcethe toeend oi the sho'e against a toe post to supporttheslioe" firmly for the actiomofitheleveling rolh 'T he above and otherfeatures of the inven' 'tioh, including various novel det'aiisofconstant-1 tion and combinations of parts,- will now be do sesibed byreference to the drawings and pointed teem-enema m tli'e di 'awihg'sy mg1 aside elevation; partly in sect ofthe fii -i er portion of one form ofa machine I Fig; Zi-s'a vrewsiinnarto-Fi 1, of the lower pdrti-bnofthe-machine:

Fig. 3' a" detail v'ifcw'in' side devotion of a f ortion: or themechanism for" operating" thei'pres sure-resenting valve an d the main:control valve oftl'iefiiiid pressure system of the machines 4 is a-frontelevatibm partly in section,-

of thenpper'portion otthemachine;

Fig. can ahplan view of a portion of the "mechan'i'sm for moving. theroll vertically into and'out oi cbntactwith the work; g I

Fig. 7 is a detail view, partly in section, of a portion of themechanism for tipping the leveling roll;

Fig. 8 is a plan view of the handles for controlling movements of theleveling roll;

Fig. 9 is a section on the line IXIX of Fi 1, and

Fig. 10 is a plan view partly in section of the means for adjustin theheel and toe posts of the jack. I

The main frame I!) of the machine carries a shoe support or jack l2 forsupporting a shoe S for the action of a leveling roll 14. The roll i4 ismounted, as will be described, for movements lengthwise of the shoe onthe support for tipping movements laterally of the shoe bottom and for;heightwise movements relatively to the shoe so that pressure may beapplied by the roll to the upper end of a lever 59 pivoted at 52 to thesupport 38 and urged by a spring 54 in a direction to move the lockingpin 44 rearwardly into locking engagement with one of the holes 46. Byexerting a rearward force on the lower end of the lever 56 the pin 44 isretracted whereupon the turntable may be rotated. As shown in Fig. 4, anangular groove '55 is formed in the turntable and connects theh'ole'sdfi but extends only half way around the turntable. The pin Mrides in the groove 56 when retracted from the holes and preventsmovement of the turntable except beshoe bottom or the pressure relievedat will. The jack [2 is held stationary during the leveling opp 'erationbut is so mounted that the shoe may be supported with either its toe endor its heel end directed rearwardly toward the leveling roll, as will bedescribed. Thispermits the operator to start the leveling operation fromeither the toe end of the shoe or the heel end as he desires.

The jack I2 includes a toe post l6 which carries at its upper end a toesupport l8 and a support for the cone of the last. The jack alsoincludes a heel post 22 to which is pivoted at 24 for swinging movementsin directions lengthwise of the shoe a block 26 which carries a spindle28 adapted to enter the thimble hole in the heel end of the last. Thespindle 28 passes through an enlarged opening in a plate 39 also carriedby the block 26, the plate being free to tip about an axis extendinglaterally of the shoe to adjust itself to the top face of the cone ofthe last. This plate and the toe support are constructed substantiallyas disclosed in Letters Patent of the United States 1,962,141, grantedJune 12,1934, on an application of A. Eppler, and accordingly arenotdescribed herein in detail. The block 26 is arranged to be swung in aclockwise direction, as viewed in Fig. 1, after a shoe has been mountedin the jack thereby to press the toe end of the shoe firmly down uponthe toe support [8, by mechanism to be described.

The toe and heel supports aremounted for movements toward and away fromeach other thereby to adjust the jack for shoes of difierent sizes. Thelower ends of the toe and heel supports have laterally extending flanges3|, as shown in Fig. 4, and are carried for sliding movements lengthwiseof the machine in a way formed in the top plate 32 of a turntable 36.secured to the top of the plate 32 engage the upper surfaces of theflanges at the bottoms of the toe and heel posts to prevent verticaldisplacement of the posts from the slideway. The turntable 36 isrotatable on a circular support 38- secured to the top of the frame Illand extending upwardly therefrom. The upper portion of the support 38has an internal flange 40 which acts as a circular bearing for theturntable 36 in a circular guideway formed by the plate 32 and a plate42 secured to the lower portion of the turntable, the construction beingsuch as to maintain the turntable in place upon the support. The

turntable is arranged to be maintained in either of two positions spaced180 apart by a pin 44 passing through a hole in the upper portion of thesupport 38 and arranged to enter either of two holes 46 (Fig. 1) in theturntable. The pin 14 is provided at its forward end with spaced flanges48 between which is received the forked Gibs 34 tween predeterminedlimits defined by the holes. Consequently, the operator cannot rotatethe turntable more than 180 in one direction. This 'is of importanceasotherwise the pressure fluid connections to be hereinafter describedmight become fouled.

For adjusting the toe and heel posts toward and away from each other toaccommodate shoes of difierent sizes, screws 58, 60 (Figs. 1 and 10) arethreaded through the toe and heel posts respectively, and are providedat their outer ends with handles 62, 64. Secured to the inner ends ofthe screws are bevel gears 55 which engage a bevel gear 58 journaled ona stud 10 carried by a post 12 secured to and extending upwardly fromthe turntable 36. It will be noted that the threads on the screws 58, 89extend in the same direc-' tions but by virtue of the bevel gearing,above described, connecting the two screws, they will turn operator,rotation of this handle in a counterclockwise direction will produce thesame result. This arrangement tends to avoid confusion to the operatorwhen adjusting the relative positions of the toe and heel posts indetermining which direction to turn the handle which is accessible tohim.

After the shoe is placed on the jack the block 2s is moved in'aclockwise direction as viewed in Fig. l in order to force the toe endof the shoe firmly against the toe support l8. For this purpose a fluidpressure motor comprising a cylinder 74 is pivoted at 76 to an extensionof the lower end of the heel post 22. A piston l3 movable in thecylinder 16 is connected by a piston rod 80 to the lower end of a bellcrank lever 82 pivoted at as to the heel post 22. This lever has an arm85 which extends rearwardly, when the jack is positioned as shown inFig. 1, for engagement with a pin 88 in the lower end of a link SiLtheupper end of which link is pivoted zit-92 to the block 29. The pin 88 isconnected "by a link 9t to the lower end of an arm 96 of a second bellcrank lever pivoted at 98 to the heel post. This latter bell crank leverhas an arm iii!) carrying a pawl H2 (Fig. 4) engageable with a ratchetI84 on the heel post,v the arrangement being such that the bell cranklever 96, Hi0 may be held in any one of a plurality of positions ofadjustment, permitting adjustment of the fulcrum about which the link 94pivots when the bell crank lever 82 is rocked about the pin 84 to movethe block 23 in a clockwise direction. By this adjustment the leveragethrough which the pressure fluid acts is controlled thereby reg-.e-eaopa's ulating the force with which the shoe is urged against thetoe support when pressure fluid is admitted through a pipe I86 into theright end of the cylinder 74. The mechanism for supplying andcontrolling the admission of pressure fluid into the cylinder 14 will beexplained hereinafter.

The leveling roll I4 is journaledin the forward end of a support I88which is in turn pivotally connected by a pin H8 to a forwardly andrear- Wardly extending shaft I I2, journaled in a crosshead H4. Thiscrosshead is carried by trans versely-extending shafts H6, H8, the shaftH6 being jou'rnaled in theupper ends of a pair of spaced ,arins I28which are interconnected by Webs I22, I24 (Figs. 1 and 2) to form arigid structure. lihe arms I28 are secured to a shaft I26 journaled inbrackets I 28 extending upwardly from a plate I88 forming the top of afluidreservoir I32 carried by the lower portion of the frame I8. Theshaft II8 is similarly carried by a pair of spaced armsIBQinter-connected by a web I36 and carried by a shaft I38 journaled inthe brackets I28. It will be understood that as the pairs of arms I28,l8t are moved about the axes of the shafts I26, I38 the leveling rollwill bemoved lengthwise of a shoe on the jack I2. For thus moving thearms I28, I84 and the leveling roll, the arms I28 are connected by alink I48 (Fig. 2) to a piston I42 movable in a cylinder I44 pivoted atI46 within the frame of the machine. Upon admission of fluid underpressure through a pipe I48 into the cylinder I44 the pis- 'ton I42 willmove forwardly causing similar motion to be imparted to the levelingroll, and the roll will be moved rearwardly upon admission of pressurefluid through a pipe I58 into the for- Ward end of the cylinder. u

Provision is made for moving the leveling roll heightwise of the shoe onthe support by rocking the roll support I88 about the pin H8. EX-tending upwardly from the support I88 is a pair of parallel curved armsI52 (Figs. 1 and 4) having slots I58 adjustably to receive a pin I56carried by the forward end of a piston rod I58. This rod is connected toa piston I68, movable in a cylinder I52 pivoted at I54 to a supportingbracket I88 keyed to and extending upwardly from the rearward end of theshaft H2. Upon admission of pressure fluid through a pipe I68 into therearward end-of the cylinder I62, the piston I 88 is moved forwardlythereby moving the roll support I88 downwardly about the pivot I'IIIcausing movement of the roll toward the shoe bottom. To lift the rollout of engagement with the shoe bottom, fluid under pressure is admittedthrough a pipe I'I8 into the forward end of the cylinder I52 moving thepiston I68 rearwar'dly. To vary the pressure exerted by the levelingroll on the shoe for a given movement of the piston I68 the position ofthe pin I56 can be adjusted heightwise of the arms I52;

Tipping movements are imparted to the roll by a fluid pressure motorI.'l2 (Figs. 1 and 9) carried by a plate II I extending downwardly fromthe crosshead H4. cylinder I18 pivotally secured at I18 to the plate I14and a piston I88 movable vertically in the cylinder. An upwardlyextending piston rod I82 is pivotally connected to an arm I84 extendinglaterally from the bracket I68 which is keyed to the shaft 2. It will beunderstood that up n the piston I88 is forced upwardly moving the Thismotor includes a' arrifiIBt-iiii: a counterclockwise direction as viewedinz'Fig- 9.-t*o :tip' the iron in the same direction. Reverse tipping ofthe leveling zro'll takes :plaee upon the .-introductio'n or fluid underpressure ii-ito the upper .end of the cylinder -I- 'I t through a pipeI88.

For supplying pressurelfluid to the vafidtlSHn0= tors heretoforedescribed a pump I98 (Fig. 12) is mounted within the -fluid reservoirI232. This pump is-driven-by 'a-motor I 92 carried by the top I38 of thereservoirand connected by iabelt I84 to -a;-pulley.-I96 onthe' shaft ofthe pump. u'lhe high pressure side of the 'pump is connectediby a pipev"I98 tea .pressure regulating "valve 288 which may be similar to the.pressure-sre'gulating' valve-246 illustrated and described in Letters:Pat entof the UnitedSta-tes 2,238,244 granted February 4, :1941 on anapplication filed in. the names of Fred V. :Hart and John iAustin.This-valve includes a: rod 282 which, when in its upper aposition; asillustrated :in Fig. 2, permits :fluid to flow from the pipe I88directly back' to the reservoir I32 by way of a pipe 284. However, whenthe rod 282 is moved downwardly bythe straight= ening of a toggle 286(Fig. 3) pressure fluidfthen of approximately 30 the 'pipe2-I4-com'fnun'lcates Withthe .pipe288 from the valve .288 by way l'jfipassageway-e218; 2218:within'thevalve. 'Thewalve memberZ I2 .:is alsoprovided with a:port12.-2I;tl'ie sole purpose of which is to balance thepressures exerted on the interior of the valve-housing 2'I8 to-avoidsticking orthe valve which might other wise i'oc'cur.

The toggle 286 (Fig. 3) includes Mink-222 connected tothe :upper end ofthe rod 1282 and sin arm 224 connected to the valve element .2I 2- Whenthe toggle is straightened the am .224

turnedzin a clockwise direction moving the valve intoposition toconhectthe high pressure outlet pipe 2880f, the -va1ve: 2188 with the pipe 214.occurs simultaneously with the operation ref the pressure-regulatingvalve 2.88"t'o supply fluid der pressure to the pipe'288 and to preventnee discharge of the fluid through the pipe 284 Back to the reservoir. es

EMT-carried by the bracket I28 is effective to press thertoggliExtending forwardly from the k eeof-ithe toggle 288 is a rod 234 theforward end or which carries a latch member 236. Pivot'd to this.latch-members an arm z'ea of a hell I 1e'vsr which .ls piv'o'ted at 'mto abracket's'ure to" the top I138 of the reservoir; This bell cranklever has a forwardly extending arin 242 when the parts; are in thepositions shown inFig 2, is in the path of movement of a shoulder i248formed at the upper endo fanarm 2'44 whic pivoted streets the; tieadle.22's. The. arm.

is urgedpy a. spring 24.8]intoposition toengage the. arm so that upondownward. movementof-the treadle the bell crank l ver zit, m is moved ina counterclockwise direction causing therod 234 to move forwardlystraightening the toggle 266. Pivoted to the frame of the machine belowthe latch member 236. is a latch bar 256 which is urged upwardly towardthe latch member236 by a spring 252 connecting thetwo. The latch bar 256moves into locking engagement with thelatch member 236 when the rod 234is moved forwardly thereby locking the toggle in itsstraightenedposition. Upon release of'the pressure on the. treadle 226 itis returnedinto the position shown in Fig. 2 by a spring 254, this position beingdetermined by an adjustable stop screw.256 which is engaged by thetreadle. During this upward movement of the treadle the upper end of thearm. 244 engages the forward end of the latch member 2'36;which is nowin its forward position thereby causing the arm 244 to move in acounterclockwise direction against the action of a spring 248. Pivotedto the upper end of the arm 244 is a latch 256 urged for movement in aclockwise direction relatively to the arm 244 by a spring 258 the extentof such movement being limited by a pin 260 carried by the upper end ofthe arm. With the treadle in its upper position after the toggle hasbeen straightened itwill be understood that the arm 244 is held in a.position forwardly of the machine from that shown in Fig. 2. When inthis position the latch member 256 is located above a pin 262 carried bythe forward end of the latch bar 250 and extending laterally therefromso that upon the next depression of the treadle 226 the latch bar 256 ismoved downwardly out of engagement with the latch member 236 permittingthe rod 234 to be moved rearwardly by the spring 230 and returnmg; thevalves :to the positions shown in Fig. 2. At this time 'the arm 244isout of the path of movement of the arm 242 of the bell crank leverwhen the lever returns into the position shown. When the treadle isagain released after the parts have been returned to their initialpositions,,the lower end of the latch 256 moves out of engagement withthe pin 262 whereupon the spring 248 returns the arm 244 into theposition shown, in readiness for the next operation.

Movements of the roll I4 during the'leveling operation are controlled bya pair of handles 266, 268 (Figs. 4, 5 and.8) which are carried by asupporting frame 210 and are preferably located substantially inalinement with the axis of the leveling 'roll at opposite ends thereof.The handle 266 is rigidly carried by the supporting frame 216 and thehandle 288 is carried for pivotal movement thereon about the axis of astud 212 (Fig. 4) for a. purpose to be described. The supportingframe218 is pivoted on a block 214 (Fig. 5) for movements about a horizontalaxis extending substantially parallel to. the roll I4, the block in turnbeing secured to a splined shaft ZTS-journaled in a boss 218 carried bythe roll support I08 and extending upwardly therefrom. The splined shaft216 is slidable in a. sleeve 280 formed with keys fitting the groovedportions of the shaft 216 so that the sleeve and shaft will turn inunison. The sleeve 280 is connected by a horizontal pivot pin 282 to acoupling member 284 which is in turn secured to a shaft 286 passing'through a bearing sleeve 288 having a depending portion keyed to theroll-supporting shaft H2. It will be understood that upon heightwisemovement of the leveling roll the splined shaft 216 will partake of acorresponding movement causing the heightwise position of the 8 handles266; 2558 always to correspond to that of the roll but at all times theshaft 216 to which the handles are connected, as heretofore described,is connected to the shaft 286 for a purpose which will appear as thedescription proceeds.

For controlling the admission of pressure fluid into the cylinder I44(Figs. 1 and 2) thereby to control themovements of the leveling rolllengthwise of the shoe bottom, a valve 296 (Figs. 1 and 5) is providedand is carried by a plate 2! extending laterally from the roll supportI08. This valve has a central port connected by pipes 292, 294 with thepipe 2M leading from the valve 2h! and through which fluid underpressure passes when the toggle 265 (Fig. 3) is straightened. This valvemay be constructed like I the valve 234 of Patent No. 2,230,244, thearrangement being such that when the valve element is moved to the left,as viewed in Fig. 1, or forwardly of the machine, pressure fluid flowsfrom the valve through the pipe 148 and when the valve is moved to theright or reawardly of the machine the'fluid leaves the valve through thepipe I56. However, when the valve is in a midposition the new ofpressure fluid through either of these pipes is prevented. Connected tothe valve element is a forwardly extending rod 360 pivoted at 382 to thesupporting frame 218. This rod carries collars 384, 326 formingabutments for compression springs 328 the adjacent ends of which engagecollars 369 at opposite sides of a flange 3 I 6 extending downwardlyfrom the plate 29 I between which collars is a collar fixed to the rod.It will be understood that when the handles 266, 268 are moved forwardlyby'the operator the rod 3ilil wil1 be similarly'moved operating thevalve 292 to cause pressure fluid to flow from the pipe I48 into therear end of the cylinder I44 where upon the leveling roll also movesforwardly. After the roll has moved forward a distance corresponding tothe extent of movement of the handles the parts associated with theleveling roll will assume their relative positions shown in Fig. 1 sothat the flow of fluid through the pipe I48 ceases. Upon rearwardmovement of the handles relatively to the roll pressure fluid flowsthrough the pipe I56 into the forward end of the cylinder I44 causingthe leveling roll likewise to move rearwardly. Thus it will beunderstood that forward and rearward movements of the leveling roll arecaused by moving the handles 266, 268 forwardly and rearwardly, theextent and directions of movement of the roll corresponding to the eX-tent and directions of movement of the handles. The leveling roll,however, is moved by fluid pressure so that the forward and rearwardmovements of the roll which are controlled by similar movements of thehandles are effected with a minimum of effort on the part of theoperator.

For controlling the flow of pressure fluid into the cylinder 62 (Fig. 1)for moving the leveling roll into and out of engagement with the shoebottom a valve 3.12 is provided, this valve being similar inconstruction to the valve 290 and mounted on the top of the cylinder I62. The central portion of this valve is connected to the pipe 294 by apipe 3I4 and the opposite ends of the valve are connected by the pipesI68, I10 to the opposite ends of the cylinder I62. The element of thisvalve is normally held in a forward position so that when the toggle 286is straightened fluid pressure flows into the forward end of thecylinder I62 holding the roll in raised position. During the levelingoperationthe valve element ZAQQL QS.

is movedrearwardiy so that pressurefluid: flows through the pipe its tomove therl'eveling; roll into engagement with the work. The val-vein-icludes a valve stem Elli (Fig; 6).connected.by a harililwith thearmature EZtlof solenoid322- carried by the cylinder 52 adiacent to the;Valve. 3-12. A spring acts on the bar Iildnornlally to hold the valvestem l-fi in its forward-position Upon energization of the solenoid,however, the armature 3-20 is drawn inwardly operating through the barM8 to move theva-lve stem. 31 5. rearwardly so that pressure fluidflowshehind the piston sec and the leveling roll is forced a ainst theshoe bottom. For energizing; the solenoid switch 325 (Fig. 4) is mountedon the support.- ing frameZlfl and is-arrang d to be actuated by arm3728 connectedto the handle 58 when the handle is moved about the pivot21-2 inacounteroloelswise direction, thereby to close the circuit to thesolenoid. An adjustable stop screw 33B limits the extent movement ,ofthelhandle. 2% in switch-closing direction and the handle is normallyheld in the position shown-relatively to the frame 273 by a torsionspring 332.. 'l hus it will be seen that in order to force the levelingroll against the shoe loottom after it has been moved over the shoebottom as heretofore; described, it is necessary for the-operator merelyto apply slight downward pressure to the handle 258 closing the switch325; and energizingthe solenoid 322. At any time during the. levelingoperation that the operatordesires to lift: the leveling roll he needonly relievethe downward pressure on the handle 263 whereupon-the switch326 is opened and the solenoid is deenergized.

For controlling the tipping movements of -the leveling roll which areeffected lovmovements. of the piston Hill (Fig. 9-) avalve-33.4fmprovided which may be similar to the valve. 290. The centralportion of this valve is connected by apipe 335 to the pipe 29!!- (Figs.-1 and 2). which. isfin turn connected to the outlet of the valve; ll AThe opposite ends of the valve 336 are connected bythe pipes I at, l8 sto theopposite. ends of. t pv inder I76. The valve includes. an upwardlypro.- jecting valve-operating. rod .338 pivotedto oneend. of a lever 348the other end of which is donrleotedv by a pin 3M to a link 3.42. Thislink connects the lever 34!! to a lever 344which is in turnpivoted at3.46 to a bracket projecting rearwardly from the plate I'l (Figs. land7). The le'verilllili this 9) as pivo d t t a 3.9 a n 3. t -utt r end ofwhich is pivoted to an arm 35llfsecu11edto the shaft 286 which is inturn connectedkto the handle-supporting frame 210 as heretbiorejdescribed. The lever 5. .4 is 'connectedhy, alink 3.52 to an oom 354integral with the arml lfi d Joy.

which movements of the piston LLBilQca movements of the leveling roll.

Whe e d ins h e n o era erator desires to tip the levelingrollhef'fex'erts.

pressure on one of the handles 261B, 2 5,8 to rock the frame 2''! 11inthe direction of the desired rolltipping' movement. This movement of thehandle-supporting frame 214?. is communicated shaft I I2 in acounterclockwise@direction, so that, the leveling roll follows themovement of the handles in its tipping movement.- The tipping movementof the roll will continue until it ha moved into a. positioncorresponding to the posi tionsof the handles at whichtime theroll-tipping movement ceases. During the tipping movement, of therollthe lever 344 moves downwardlyassum-. ing that the shaft- 286-hasbeen turned in a oou ne tel-clockwise direction b movement of the. frame210. whereupon the. lever. 34 0 moves-about" the pivot-335th OVe thevalve hack toward its i i W n h 1 .1 has mow -an amount corresponding tothe extent of movement of the handles the valve again returns to itsmidpgsitionl so that the roll-tippingmovementstops. It willunderstoodthat if the. shaft 286 isrookedin; a clockwise direction theroll will be tipped-in a. corresponding. direction, the piston. Milet-this.

time moving downwardly.

. In the-operationofthe machine, theoperato places a shoe onthe jack,after the Jack. been properly adjusted .in. accordance with the size ofthe shoe to be leveled whereupon the .treadleQZZG.

is depressedto straighten the toggle 20.6 and pros; surefluidfiows intothe right end of the cylinder 14 (Fig. 1). to tip the block 2.6. in-aclockwise-dime tion forcing the toe end of the shoev firmly downagainst. the toe support 18., The. operator-them grasps the handles 25625 8. moving-them toward. him which causes operation of. thevalve ,290to supply pressure fluid to the cylinder I44} thereby tov moveythe. rolloverthe shoe loottom. Byeir}: ertihgslilght. downwand pressure on thehandle 268 'the solenoid 322 .e is energized operating. valve 3l 2 (Fig.6), and pressure fluid fiows into the rear end of the cylinder 16.2.(Fig. 1)- fQrJc in g the rollagainst the shoe bottom. The roll is nowmoved lengthwise-of theshoeby movingjth e han olleszfili, 25.8toward-and away'from the operator in vthe manner of operating a rollingpin. l3y. eg entingpressure oripneor the other of. the handles ndiip nsth h lc n h i emev 12"!) the r valve 3.3.4 is .op rat d'to su lpressure-flu no one end or the other, of the cylinder lltiliig. 9)

causing the roll to tip accordingly. l

After the leveling operation ha-s been completed the leveling roll'isreturned to the position shownw V in Fig.1: and the'treadle 22,6.isagain depre sseld, re leasing t latch zstgwhereunon tn ..t ogg le..z.os;is broken by the spring 230 and'the valveele 2]; isreturned to theposition shownin F 2 At the same time the pressureaegulating lve pumpii!!! to returndirectly to the reservoir.

From the foregoing it willbe seenlthatthefh'anjment with the axis of thehandles. Hav us d sc i ed the nvent on wh claim as new desir t secure byLetters Bate. ent'of t Un tedsi is w i j In a level n ma hine sho sum-92i v lin 01 m unt or m e-mea i e m l of a h s qn th vpn r to. pau th 911 or. crate, progressively along the shoe bottom,.. .pow.eI:-.-

QR. en ows t nnes m vi sa d ral ie amass member movable by the operatorfor controlling said power-operated means to cause it to move said rollinto positions corresponding to the positions into which said member ismoved by the operator. I w 1 i 2."In a leveling machine, a shoe support,a leveling roll mounted for movements lengthwise of a'shoe on thesupport to' cause the roll to operate progressively along the shoebottom, poweroperated means for thus moving said roll, and amembermounted adjacentto said roll for movements by the operatorlengthwise of a shoe on the support for controlling said power-operatedmeans to cause the roll to follow the movements of said member. f

3; In a leveling machine, a shoe support, a leveling roll mounted formovements lengthwise of a shoe on thesupport to cause the roll tooperateprogressively along the shoe, bottom and also for tippingmovements laterally of the shoe bottom, power-operated meansjfor movingsaid roll lengthwise of the shoe, power-operated means for impartingtipping movements to said roll, and a control member movable along onepath for controlling the first of said power-operated means and movablealong another path for controlling the second of said power-operatedmeans.

4. In a leveling machine, a shoe support, a leveling roll mounted formovements lengthwise ofashoe on the support to Cause the roll to operateprogressively along the. shoe bottom and also i'or tippingmovementslaterally of the shoe bottom, power-operated means for movingsaid roll lengthwise of the shoe, power-operated meansfor impartingtipping movements to said roll, and a control member movable lengthwiseof the shoe on the support for controlling the first of saidpower-operated. means to cause the roll to move into positionslengthwise of the shoe on the support corresponding to the positionsinto if which said member is moved by the operator, and movablelaterally of the shoe on the support to control the second of saidpower-operated-means to cause the roll to tip into positions corresponderate progressively along the shoe bottom andalso for tipping movementslaterally of the shoe bottom, power-operated meansfor moving .said rolllengthwise of the shoe, power-operated means for imparting tippingmovements to said roll, a

control member movablellengthwise of the shoe on the support forcontrolling the first of said power-operated means to cause the roll tomove into positions lengthwise of the shoe on the supportcorresponding'to the positions into which said member is moved by theoperator; and movable laterally of the shoe on'the support to controlthe second of said power-operated means to cause the roll to tip. intopositions corresponding tothe positions into which said member is movedlaterally of the support, and means operated by said member for movingthe roll heightwise of the shoe bottom. V

6.-In a leveling machine, a shoe support, a

leveling roll mounted for movements lengthwise of a shoe on the supportto cause the roll to operate progressively along a shoe bottom, a pairof operating handles near the opposite ends of said roll, means mountingsaid handles for unitary movements by the operator in directionslengthwise of the shoe on the support, and poweroperated meanscontrolled by said handles for causing said roll to follow the movementsof the handles.

7. In a leveling machine, a shoe support, a leveling roll mounted formovements lengthwise of a shoe on the support to cause the roll tooperate progressively along a shoe bottom, a pair ofoperating handlesnear the opposite ends of said roll, means mounting said handles for unitary movements by the operator in directions lengthwise of the shoe onthe support, poweroperated means controlled by said handles for causingsaid roll to follow the movements of the handles, and means controlledby one of said handles for causing the roll to be moved verticallytoward and away from the shoe bottom.

8. In a leveling machine, a shoe support, a leveling roll mounted formovements lengthwise of a shoe on the support to cause the roll tooperate progressively along the shoe bottorm'a pair of operating handlesnear the opposite ends of the rolls, means mounting said handles forunitary movement by the operator in directions lengthwise of the shoe onthe support and also for unitary rocking movements laterally of the shoeon the support, power-operated means for moving the roll lengthwise ofthe shoe on the support, power-operated means for tipping the rolllaterally of the shoe on the support, and means for operating both ofsaid power-operated means in response to movements of the handles by theoperator whereby the roll is moved into positions corresponding to thepositions of the handles relatively to the shoe on the support,

9. In a leveling machine, a shoe support, a leveling roll mounted formovements lengthwise ofashoe on the support to cause the roll to operateprogressively along the shoe bottom, a, pair of operating handles nearthe opposite ends of the rolls, means mounting said handles for unitarymovement by the operator in directions lengthwise of the shoe on thesupport and also for unitary rocking movements laterally of the shoe onthe support, power-operated means for moving the roll lengthwise of theshoe on the support, power-operated means for tipping the roll laterallyof the shoe on the support, means for operating both said power-operatedmeans in responseto movements of the handles by the operator whereby theroll is moved into positions corresponding to the positions of thehandles relatively to the shoe on the support, and means controlled byone of said handles for causing the roll to be moved vertically towardand away from the shoe bottom.

10. In a leveling machine, a shoe support, a leveling roll, meansmounting said leveling roll for movements lengthwise of a shoe on thesupport to cause the, roll to operate progressively along the shoebottom, fluid pressure means for thus moving said roll, and meansassociated with said roll for controlling said fluid pressure means.

11. In a leveling machine, a shoe support, a leveling roll, meansmounting said leveling roll for movements lengthwise of a shoe on thesupport to cause the roll to operate progressively along the shoebottom, fluid pressure means for thus moving said roll, an operatingmember at one end of said roll mounted for movements by the operator indirections lengthwise of a shoe on the support, and mechanism operatedby said member for controlling said fluid pressure means to cause theroll to follow the movements of said member. a 1

12. In a leveling machine, a shoe support, a

amasse- I 3 leveling roll, means mounting said leveling roll formovements lengthwise of'a shoe on the support to cause the rolltooperate progressively eause the rolltoiollow the movements ofsaidmember, and fluid pressuremeans controlled by said member for movingsaid rol'l' heightwise or the shoe on the support into and out ofengagement with the shoe bottom. I

13. In a leveling machine, a shoe support, a

leveling roll, means mounting said leveling roll" for movementslengthwise of a shoe on the support to cause the roll to operateprogressively along the shoe bottom, fluidpressure means for thus movingsaid roll, an opera-ting member at one end of said; roll mountedforrnoyements by the operator in directionslengthwise-oi a shoe onthe'support, mechanism operated by said member for controlling saidfluid pressure means to cause the roll to follow themovements of saidmember, fiuid pressure means controlled by said member for moving said"roll heightwise oi the shoe on the support into and out ofengagementwith the shoe bottom, and other fluid pressure meanscontrolled by said member for imparting t ipmng movements to the rolllaterally of the shoebottom.

14. In a levelin machine, a shoe support; a leveling roll, a support forsaid leveling roll; power-operated means for moving" said ro ll supportto move the leveling roll in directions 'lengthe wise of a shoe on theshoe support to cause the roll to operate progressively along the shoebottom, and power-operated means associated with; said roll support fortipping. the leveling rolllaterally thereof.

1-5. In a leveling machine, a shoe supportpa. leveling roll, .a supportfor said leveling roll,

power-operated means for moving said roll support to move theleveling-rollin directions lengthwise of a shoe on the shoe support tocause the roll to operate progressively alon the shoe bottom,power-operated means associated with said roll support for tipping theleveling roll laterally thereof, and operating handles associated withsaid roll for controlling each of said power-operated means.

16. In a leveling machine, a shoe support, a leveling roll, a supportfor said leveling roll, power-operated means for moving said rollsupport to move the leveling roll in directions lengthwise of a shoe onthe shoe support to cause the roll to operate progressively along theshoe bottom, and power-operated means associated with said roll supportfor moving the leveling roll heightwise into and out of engagement withthe bottom of a shoe on the support.

17. In a leveling machine, a shoe support, a leveling roll, a supportfor said leveling roll, power-operated means for moving said rollsupport tomove the leveling roll in directions lengthwise of a shoe onthe shoe support to cause the roll to operate progressively along theshoe bottom, power-operated means associated with said roll support formoving the leveling roll heightwise into and out of engagement with thebottom of a shoe on the support, and operating handles associated withsaid roll for controlling each of saidv power-operated means.

18. In a levelin machine, a shoe support, a

leveling roll, a'support for said levlelingiollg? power-operated meansfor moving said roll sup port to-move the leveling roll in directionslength-z. wise of' a. shoe on the shoe support to cause the roll tooperate progressively-along the shoe bottom, power-operated meansassociated with said roll support fol-tipping the, leveling rolllaterally:

thereof, power operated means associated'with said roll' support formoving the leveling roll heiglitwise intoand out of engagementwith theb'ottomof a shoe on; the support, and an operating handle associatedwith said roll for controlling eachiot saidpower-operated means.

19; In a levelin machine, shoe support, a

leveling roll, a support for said'leveling roll mov--- able to carry theroll in directions length-wise oi a shoe on the shoe support, meansmounting said roll on said roll support for tipping movement's'relatively thereto in directions laterally of'a shoe on the slicesupport for movements height- Wise of the shoe support toward and fromthe'shoe'bo-ttom, power-operated means for mov' ing-said roll support,and pow gpcrated means movable with said rollsupport for tipping theroll; r t

20. In a leveling machine, a shoe support, a

leveling roll, a support for said leveling roll movable tmcarrythe rollin directions lengthwise of a shoeon the shoe support, means mountingsaid roll on said roll support'for tipping movements relatively theretoin directions laterally of a shoe o-n'qthe shoe-support and formovements heightwise-of: the-shoe support toward and away'from" the shoebottom, power-operated means for moving said roll support, poweropera-ted means-mov-' able with said roll support for tipping the'roll,a

pair" of operating handles movabiy carried by said support'at oppositeends of said roll, and

means operated in responseto movement of said handles-in the desireddirection of rolrmo'vem'ent" for controlling said pressure-operatedmeans to cause movement of the roll in the direction" of movement ofthehandles.

' In a-leveling machine,v ,a shoe support; a

leveling roll; a'support for'said leveling u -av;

able 'to carry the roll in directions lengthwise 0f a shoe on the shoesupport, means mounting said roll on said roll support for tippingmovements relatively thereto in directions laterally of a shoe on theshoe support and for movements heightwise of the shoe support toward andaway from the shoe bottom, power-operated means for moving said rollsupport, power-operated means movable with said roll support fortipping-the roll, a pair of operating handles movably carried by saidsupport at opposite ends of said roll, means operated in response tomovement of said handles in the desired direction of roll movement forcontrolling said pressure-operated means to cause movement of the rollin the direction of movement of the handles, said last named means beingconstructed and arranged to limit the extent of operation of saidpower-operated means and the movement of said roll inaccordance with theextent of movement of the operatin handles.

, 22. In a leveling machine, a shoe support, a leveling roll, means foreffecting relative movement of said shoe support and said leveling rollin directions lengthwise of a shoe on the support to cause the roll tooperate progressively along the shoe bottom, and means mounting saidshoe support for turning movement whereby a shoe carried thereby haseither its toe end or its heel end directed rearwardly.

23. In a leveling machine,- a shoe support, a

15 leveling roll, means for effecting relative movement of said shoesupport and, said leveling roll in directions lengthwise of a shoe onthe support to cause the roll to operate progressively along the shoebottom, means mounting said shoe support for turning movement, and meansfor locking said support in either of two positions in which either thetoe end of a shoe carried thereby or the heel end of the shoe isdirected rearwardly.

24. In a leveling machine, a shoe support, a leveling roll, meansmounting said leveling roll for movement, from an initial position inwhich it is located rearwardly of a shoe on the support, in directionslengthwise of the shoe to cause the roll to operate progressively alongthe shoe bottom, and means mounting said shoe support for turningmovement into either of two positions in which either the toe end of theshoe or its heel end is directed rearwardly.

25. In a leveling machine, a shoe support, a leveling roll, means foreffecting relative movements of said shoe support and said leveling rollin directions lengthwise of a shoe n the support to cause the roll tooperate progressively along the shoe bottom, said shoe supportcomprising a toe support and a heel support, said heel support includinga spindle arranged to enter the hole in the heel end of a last, meansmounting said spindle for rocking movement about an axis extending'transversely of a shoe on the shoe support, and power-operated means formoving said spindle about said axis in a direction to force the toe endof the shoe firmly against the toe support.

26. In a leveling machine, a shoe support, a leveling roll, means foreiiecting relative movement between said shoe support andlsaid levelingroll in directions lengthwise of a shoe on the support to cause the rollto operate progressively along the shoe bottom, said shoe supportincluding a spindle arranged to enter the hole in the heel end of alast, means mounting said spindle for rocking movement about an axisextending transversely of a shoe on the shoe support, means mountingsaid shoe support for turning movement into either of two positions inwhich either the toe end of the shoe or its heel end is directedrear- 16wardly, and power-operated means carried by said support for moving saidspindle about said axis in a direction to force the toe end of the shoefirmly against the toe support.

2'7. In a levelin machine, a shoe support, a levelingroll, means foreffecting relative movement of said shoe support and said leveling rollin directions lengthwise of a shoe on the support to cause the roll tooperate progressively along the shoe bottom, said shoe supportcomprising a toe support and a heel support, means for adjusting saidtoe support and said heel support toward and away from each other toaccommodate shoes of different sizes, means carried by said heel supportfor forcing the toe end of the shoe firmly against the toe support, andpoweroperated means movable with the toe support for actuating saidlast-named means.

28. In a leveling machine, a shoe support, a leveling roll, fluidpressure means for effecting relative movement of said shoe support andsaid leveling roll in directions lengthwise of a shoe on the support tocause the roll to operate progressively along the shoe bottom, fluidpressure means associated with said shoe support for holding the shoefirmly on the shoe support, a pump for supplying pressure fluid to saidfluid pressure means, a pressure-regulating valve controlling the outputof said pump, a valve for controlling the flow of pressure :fluid fromsaid pressure-regulating valve to said first-named fluid pressure means,a valve for controlling the flow of pressure fluid from saidpressure-regulating valve to said second-named fluid pressure means, anactuating member for operating said second-named valve to directpressurefluid to said second-named fluid pressure means and for simultaneouslyactuating said pressure-regulating valve to supply fluid at a highoperating pressure to said first flow control valve, and amanually-operated member for controlling said first valve to control therelative movements of said shoe support and said leveling roll.

FRED V. HART.

No references cited.

